Article Writing

const float pileFloat = 0.1; //How much the sand floats
const int floatMin  = 1;   //Min for floating
<br>
doFloat(int i, int j)
{bool floating = true;
 pile[i,j].sandFloat = pile[i,j].sand * pileFloat; //Pile has sand and sandFloat member
<br>
 if (sandFloat > floatMin) //Else build up spill
   while(pile[i,j].sandFloat > 0 && floating)
     {floating = false;
      for(int x = i-1; x <= i+1; x++)
       for(int y = j-1; y <= j+1; y++)
         if(pile[x,y].sand + pile[i,j].sandFloat/8 < pile[i,j].sand) 
              if( addSand(x,y, pile[i,j].sandFloat/8) ) //Eight surronding piles
                  {
                   floating = true; // Avoid getting locked up in loop
                   pile[i,j].sand -= pile[i,j].sandFloat/8;
                  }
      }             
}
<br>
bool addSand(int i, int j, float sand)
{//Check that i and j are valid in the matrix 
 pile[i,j].sand += sand;
 doFloat(i,j);
 return // i and j valid
}